12745785 has 32 divisors (see below), whose sum is σ = 22151808. Its totient is φ = 6220800.

The previous prime is 12745753. The next prime is 12745787. The reversal of 12745785 is 58754721.

12745785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12745785 - 2⁵ = 12745753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12745787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31585 + ... + 31985.

It is an arithmetic number, because the mean of its divisors is an integer number (692244).

Almost surely, 2^12745785 is an apocalyptic number.

12745785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12745785 is a deficient number, since it is larger than the sum of its proper divisors (9406023).

12745785 is a wasteful number, since it uses less digits than its factorization.

12745785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its digits is 78400, while the sum is 39.

The square root of 12745785 is about 3570.1239474282. The cubic root of 12745785 is about 233.5906899652.

It can be divided in two parts, 12745 and 785, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12745785 in words is "twelve million, seven hundred forty-five thousand, seven hundred eighty-five".